Permian
Permian යනු වසර මිලියන 299-252 කට පෙර, එනම් Paleozoic යුගයේ හයවන සහ අවසාන කාලපරිච්ඡේදය වේ.
| Permian | |||||||||||||
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| Chronology | |||||||||||||
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| Etymology | |||||||||||||
| Name formality | Formal | ||||||||||||
| Usage information | |||||||||||||
| Regional usage | Global (ICS) | ||||||||||||
| Time scale(s) used | ICS Time Scale | ||||||||||||
| Definition | |||||||||||||
| Chronological unit | Period | ||||||||||||
| Stratigraphic unit | System | ||||||||||||
| Time span formality | Formal | ||||||||||||
| Lower boundary definition | FAD of the Conodont Streptognathodus isolatus within the morphotype Streptognathodus wabaunsensis chronocline. | ||||||||||||
| Lower boundary GSSP | Aidaralash, Ural Mountains, Kazakhstan 50°14′45″N 57°53′29″E / 50.2458°N 57.8914°E | ||||||||||||
| GSSP ratified | 1996 | ||||||||||||
| Upper boundary definition | FAD of the Conodont Hindeodus parvus. | ||||||||||||
| Upper boundary GSSP | Meishan, Zhejiang, China 31°04′47″N 119°42′21″E / 31.0798°N 119.7058°E | ||||||||||||
| GSSP ratified | 2001 | ||||||||||||
ආශ්රිත
- List of fossil sites (with link directory)
- Olson's Extinction
- List of Permian tetrapods
මූලාශ්ර
Wikisource has original works on the topic: Paleozoic#Permian
Permian හා සබැඳි මාධ්ය විකිමාධ්ය කොමන්ස් හි ඇත.
- University of California offers a more modern Permian stratigraphy
- Classic Permian strata in the Glass Mountains of the Permian Basin
- "International Commission on Stratigraphy (ICS)". Geologic Time Scale 2004. සම්ප්රවේශය September 19, 2005.
- Examples of Permian Fossils
- Permian (chronostratigraphy scale)
- Schneebeli-Hermann, Elke (2012), "Extinguishing a Permian World", Geology 40 (3): 287–288, ,
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